Nu 545 Unit 1 Questions And Answers 100% Verified A+ Guaranteed

What causes hypernatremia? {Ans: Hypernatremia can be caused by advanced age, impaired mental state, fever, diarrhea, vomiting, uncontrolled diabetes mellitus, tube feedings, and use of diuretics. (p111)}What is the role of reverse transcriptase? {Ans: The reverse transcriptase converts single stranded viral RNA into double stranded DNA (Pg 312)}What is cell communication? How does it occur? {Ans: Cells need to communicate w/ each other to maintain a stable internal environment, or homeostasis; to regulate growth and division... it is done by 3 main ways. 1) they display plasma membrane-bound signaling molecules (receptors) that affect the cell itself and other cells in direct physical contact. 2) they affect receptor proteins inside the target cell and the signal molecule has to enter the cell to bind w/ them. 3) they form protein channels that directly coordinate the activities of the adjacent cells. Pg 19.}Infants are susceptible to significant total body water loss, why? {Ans: In a newborn infant total body water (TBW) is about 70 to 80% of body weight because infants store less fat. In the immediate postnatal period, a physiologic loss of body water occurs, equivalent to about 5% of body weight as the infant adjust to